Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Elpro Technologies 905U-K
Summary of Contents for Elpro Technologies 905U-K
- Page 1 User Manual 905U-K Wireless I/O For 905U-1,2,3,4, C and G products, refer to separate User Manuals ELPRO Technologies Pty Ltd, 9/12 Billabong Street, Stafford Q 4053, Australia. Tel: +61 7 33528600 Fax: +61 7 33528677 Email: sales@elprotech.com Web: www.elprotech.com...
- Page 2 • operate the equipment near electrical blasting caps or in an explosive atmosphere All equipment must be properly grounded for safe operations. All equipment should be serviced only by a qualified technician. ELPRO Technologies Pty Ltd 2010 Page 2...
- Page 3 User Manual FCC Notice: 905U-K Wireless I/O Module This Users Manual is for the ELPRO 905U-K wireless I/O module. This device complies with Part 15.247 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference and This device must accept any interference received, including interference that may cause undesired operation.
- Page 4 E.g. "This equipment is remotely controlled and may start without warning. Isolate at the switchboard before attempting adjustments." The 905U module is not suitable for use in explosive environments without additional protection. ELPRO Technologies Pty Ltd 2010 Page 4...
- Page 5 User Manual Limited Warranty, Disclaimer and Limitation of Remedies ELPRO products are warranted to be free from manufacturing defects for a period of 2 years from the effective date of purchase. The effective date of purchase is decided solely by ELPRO Technologies.
-
Page 6: Table Of Contents
External Battery Supplies ....................30 Input Signal Connections ....................30 3.5.1 Digital/Pulse Inputs ......................30 3.5.2 Shaft Encoder Connections ....................31 3.5.3 Analog Input ........................31 3.5.4 RS232 serial port ........................ 33 ELPRO Technologies Pty Ltd 2010 Page 6... - Page 7 User Manual CONFIGURATION ------------------------------------------------------------------------------ 34 I/O Mapping ........................35 Update Transmission Times ..................36 Digital Inputs ......................... 36 Analog Input ........................37 Analog Setpoints ......................38 Supply Voltage ......................38 Pulse Inputs ........................40 4.7.1 Manually Setting Counter Values ..................42 4.7.2 Shaft Encoder Inputs ......................
-
Page 8: Overview
OVERVIEW Note: Please refer to separate User Manuals for the 905U-1,2,3,4 and -C products. The 905U-K product will be referred to as the “905K” for the rest of this manual to clearly delineate it from the other 905U products. The 905K radio telemetry module is an economical solution for the remote monitoring of process signals. -
Page 9: Power Supply
User Manual Examples: electricity metering, fluid flow, raingauge, level from a shaft encoder Analog continuously variable signals (0-20mA, 4-20mA, 0-10mA, 0-10V) Examples: measured tank level, measured process temperature Some internal signals may also be transmitted to outputs in the network: •... - Page 10 (or a “destination address”). An input mapping is entered for each input signal (external and internal) which is used. Mappings may be inverted such that the output is the reverse value of the input. ELPRO Technologies Pty Ltd 2010 Page 10...
-
Page 11: Operation
User Manual 2 OPERATION 2.1 Normal Operation Once configured using the 905K configuration software, the 905K module will normally be in “sleep” mode to conserve power. During sleep mode, the microprocessor controller powers down, and the analog loop supply is turned off. The microprocessor will automatically “wake up”... -
Page 12: Inputs
905K will transmit the new pulse count. In addition, an update transmission of the pulse count will be transmitted if the pulse count has not been ELPRO Technologies Pty Ltd 2010 Page 12... - Page 13 User Manual transmitted for the update time. If an update time of zero is selected, then no update messages will be sent. The maximum pulse input is: 300Hz for contact or NPN inputs (1 msec minimum on-time and off-time), or ...
-
Page 14: Shaft Encoder Inputs
0% analog signal will correspond to zero pulse rate (0Hz). The pulse rates are treated as analog inputs and follow the rules for an analog input as described ELPRO Technologies Pty Ltd 2010 Page 14... -
Page 15: Analog Inputs
User Manual below. 2.4.5 Analog Inputs The analog input can measure from 0 – 24mA or 0 – 10VDC. Current or voltage input can be selected by an internal selector (refer Installation section of this manual). The mA input can be used for conventional 4-20mA signals or 0-10mA or 0-20mA. - Page 16 Overview: • Measurements of the analog signal are determined by the sample time and warm-up time ELPRO Technologies Pty Ltd 2010 Page 16...
-
Page 17: Setpoint Status
User Manual • Analog value is transmitted if the measured value has increased by the configured sensitivity amount since the last transmission • Analog value is transmitted if the input value has not been transmitted within the update time (10 seconds – 7 days) •... -
Page 18: How To Design A Remote Monitoring System
The probability of success for an individual message depends on the transmission density and the number of re-transmissions for each message. This is shown in the following graph: ELPRO Technologies Pty Ltd 2010 Page 18... -
Page 19: How Far Will The Radio Transmit
User Manual Probability of successful transmission 100% Transmissions per message 10 % 1000 2000 3000 Messages Per Hour This assumes that the radio path is reliable and that there is no other radio users on this radio channel. If intermediate repeaters are used, then each repeated message should be counted as another message. - Page 20 Input is expected to be on twice per year for 4 hours No. of change messages per year 2 (twice per year) * 2 (on to off and off to on) No. of “off” update messages per year 364 (approximately) ELPRO Technologies Pty Ltd 2010 Page 20...
- Page 21 User Manual No. of “on” update messages per year 2 (twice per year) * 16 (4 hours @ 15 min update) Total messages for digital input 4 + 364 + 32 Pulse input Update time 1 day Sensitivity 50 Average pulse rate is 1 pulse per hour, with peak rate of 20 per hour, for 10 hours, three times per year. No.
-
Page 22: Security Considerations
“Foreign” modules will hear the messages, but cannot decrypt the messages. For more information, refer to section 4.3.7 of the 905U I/O User Manual. ELPRO Technologies Pty Ltd 2010 Page 22... -
Page 23: Hardware Installation
User Manual HARDWARE INSTALLATION WARNING! 110/220/240V mains power must NOT be connected to any input terminal of the 905K module! The 905K module is housed in a weatherproof enclosure with external power and input signals connected via a weatherproof connector at the bottom of the module. Wires of up to 0.75 sqmm may be connected by soldering to the female connector supplied with the unit. -
Page 24: How To Mount The 905K
An obstructed path requires testing to determine if the path will be reliable. Where it is not possible to achieve reliable communications between two 905U modules, then a third 905U module may be used to receive the message and re-transmit it. This module is ELPRO Technologies Pty Ltd 2010 Page 24... - Page 25 It is important to weatherproof this connection by wrapping with waterproofing tape (for example 3M 23 tape). The available antennas to be used with the 905U-K units are: WH900 Whip antenna for mounting directly onto the module - operation up to ½...
-
Page 26: Dipole And Collinear Antennas
If there are more than two stations transmitting to a common station, then the Yagi antennas should have vertical polarisation, and the common (or “central” station should have a dipole or collinear (non-directional) antenna. ELPRO Technologies Pty Ltd 2010 Page 26... -
Page 27: Connection Plug
CABLE CLAMP (ONE MOUNDING SPLIT & USED AS 2 HALVES STRAIN RELIEF O-RING COVER LOCKING RING LINE SOCKET EXTERNAL SUPPLY ANALOGUE IN + ANALOGUE ANALOGUE IN - LOOP SUPPLY 905U-K NOTE: VIEW FROM SOLDER CONNECTION SIDE OF PLUG man_905K_1.10.doc Page 27... -
Page 28: Pl1-K Plug Lead
(COMMON) to “ground”. Connect the external supply as per the following diagram. 1 amp SUPPLY ⊂ 905K 5.4 - 30 VDC ⊂ 1 amp SUPPLY ⊂ 905K BATTERY CHARGER ⊂ BATTERY ELPRO Technologies Pty Ltd 2010 Page 28... -
Page 29: Battery Pack Bu-5
The lid of the BU-5 can be rotated to suit installation. ELPRO 905U-K A second BU-5 can be connected to the first in a similar manner. The input wiring for the 905K is then connected to the socket on the second BU-5. -
Page 30: External Battery Supplies
Digital and pulse inputs share the same input channel. Each input is connected between the DIN connector and COMMON. Inputs can be voltage-free contacts, NPN transistor switches, or a TTL voltage signal (ON < 1.5 volt DC, OFF > 3.5 volts DC). ELPRO Technologies Pty Ltd 2010 Page 30... -
Page 31: Shaft Encoder Connections
User Manual DIN1 ⊂ DIN2 ⊂ 905U-K ⊂ Inputs can be voltage free contact or open-collector transistor Inputs do not have any surge protection. If the sensor or switch is mounted a long way from the 905K module, external isolation such as a relay may be required for surge protection. - Page 32 Additional surge protection is recommended in high electrical noise environments, or if the analog signal cable runs for a long distance underground before connecting to the 905K module. ELPRO Technologies Pty Ltd 2010 Page 32...
-
Page 33: Rs232 Serial Port
User Manual 3.5.4 RS232 serial port An RS232 port is provided for connection of a PC for configuration and diagnostics. To access the serial port DB9 connector, remove the front cover from the module by unscrewing the four screws in the front panel. The serial port is a 9 pin DB9 male and provides for connection to a terminal or to a PC for configuration, field testing and for factory testing. -
Page 34: Configuration
14, it will appear as 905-K#14_1 - its secondary address is 1. Note that this module is recognised as a completely different module to the first 905K. For small systems, it is simpler to select a unique unit address for each 905K module. ELPRO Technologies Pty Ltd 2010 Page 34... -
Page 35: I/O Mapping
User Manual 4.1 I/O Mapping Enter I/O mappings as per the 905U manual. DIN1 DO1 (DIN1 from #14) 905K 905U-1 AO2 (AIN from #14) In the following example, a digital input at a 905K is mapped to DO1 of 905U#3. The analog input of the 905K is mapped to AO2 of the same DO3 (SP inv from #14) -
Page 36: Update Transmission Times
A paralysis time is useful in large systems when a lot of inputs can change at the same time. Once a 905K has transmitted a message, it cannot transmit another message during the paralysis ELPRO Technologies Pty Ltd 2010 Page 36... -
Page 37: Analog Input
User Manual time - this is to prevent overcrowding of the radio channel. An example could be a system monitoring environmental alarms. Normally there would be few change messages, but under abnormal conditions, a lot of change messages could be generated in a short time period. The paralysis time will allow each module to send the first change message, but subsequent change messages are disabled during the paralysis time. -
Page 38: Analog Setpoints
The supply voltage may be mapped as an internal analog input. The 16 bit value corresponds to 0-30V. There is no analog sensitivity for this measurement - it is only transmitted based on the configured update time. The measurement is taken every time the 905K transmitter operates. ELPRO Technologies Pty Ltd 2010 Page 38... - Page 39 User Manual The supply voltage also has user-configurable setpoints to determine the Supply Low Volts alarm. These setpoints can be set from the SetPoint option. The 905K module will shut-down when the supply voltage reaches 90% of the “low volts” value. We recommend the following setpoint values: Battery Type Low Volts Setpoint...
-
Page 40: Pulse Inputs
PI2 has a user-configurable divider for scaling its pulse counters. PI1 does not have a divider. The PI2 divider can be an integer from 1 – 255. If the divider is set to X, then the base counter will increment by 1 for every X input pulses. ELPRO Technologies Pty Ltd 2010 Page 40... - Page 41 User Manual Example 1: A turbine meter is connected to a 905K with a pulse signal of 15 pulses per gallon. The normal flow rate is 30 gallons/sec - that is, the normal pulse signal is 450Hz (15x30). The flow signal is connected to PI2, and divider of 15 is selected such that the pulse count is scaled to units of gallons.
-
Page 42: Manually Setting Counter Values
To prevent this occurring, a paralysis time of 60 seconds is selected. 4.7.1 Manually Setting Counter Values The values in the counters can be manually set to any value - refer to section 5.3.2 of this manual. ELPRO Technologies Pty Ltd 2010 Page 42... -
Page 43: Shaft Encoder Inputs
User Manual 4.7.2 Shaft Encoder Inputs If the pulse inputs are connected to a shaft encoder (incremental or quadrature types), then the Shaft Encoder Inputs option should be selected. The 905K will then look at both pulse input signals and calculate a “position” value for the shaft encoder. If an incremental encoder is used, then the correct counter value will be stored in the PI1 counter. -
Page 44: Number Of Transmissions
• Click on the “Program Unit” button. You will be asked to confirm, if the module already has a different system or unit address. Each module will need to be programmed individually. ELPRO Technologies Pty Ltd 2010 Page 44... -
Page 45: Loading Configuration From A Module
User Manual 4.10 Loading Configuration from a Module Care should be taken when loading a configuration from a module. It is easy to lose the system address and unit address. We suggest that you first view the system address and unit address - you can do this via the “Unit Options”... -
Page 46: Diagnostics And Testing
The OK LED will light continuously once the module is in configuration mode. Note : The OK LED will generally not light continuously unless the cable is in place and the configuration software is running. ELPRO Technologies Pty Ltd 2010 Page 46... -
Page 47: Read Inputs
User Manual 5.3.1 Read Inputs This option provides a display of the measured input signals in the 905K, both internal and external. Digital inputs (internal and external) are displayed as "ON" or "OFF", the pulse input accumulated count values are displayed and the analog input value is displayed in mA or V. -
Page 48: Calibrating Analog Input
For high accuracy measurement, you will need to use a high accuracy mA or V meter to ensure that the high and low values are correct. If you wist to return to the factory-calibration, select “4-20mA” at the AIN Range Selection ELPRO Technologies Pty Ltd 2010 Page 48... -
Page 49: Tone Reversals
User Manual display, then “Clear Calibration” at the “Analog Calibration” display. 5.3.4 Tone Reversals This feature turns the radio transmitter on continuously for radio path testing. A series of 1 and 0 data bits is transmitted. If the 905K is powered from a battery supply, this testing will draw a lot of power. -
Page 50: Specifications
Current Drain <140 “Sleep” mode 10mA + analogue loop Operating mode current Analogue loop supply Internal DC converter 24V DC Nominal, 50mA Low Battery voltage status Monitored Can be transmitted to remote modules ELPRO Technologies Pty Ltd 2010 Page 50... - Page 51 User Manual Radio Transmitter Frequency 902 - 928 Mhz 250 kHz channel spacing Transmit power 1 Watt Expected line-of-sight range 20 Miles + @ 4W EIRP USA/Canada (subject to local conditions) 15 km @ 1W EIRP Australia / New Zealand Range may be extended by using up to 5 intermediate 905U modules as repeaters,...
- Page 52 905K Radio Telemetry Module User Manual Network Configurations Max. number of 905U-K 905U-K is compatible with 905U inputs is >20,000 if radio telemetry units which may 905U-C/G modules are be used as repeaters, provision of used as receivers. outputs, or as network master...
-
Page 53: Warranty
User Manual WARRANTY We are pleased that you have purchased this product. ELPRO products are warranted to be free from manufacturing defects for a period of 2 years from the effective date of purchase. The effective date of purchase is decided solely by ELPRO Technologies.
Need help?
Do you have a question about the 905U-K and is the answer not in the manual?
Questions and answers